Because the output is usually the divided side of the machine
Amplitude of a sound wave
Answer:
D. The friction force increases by 9600 N.
Explanation:
Frictional force is directly proportional to kinetic coefient of friction.
The force between the two particles will quadruple
Explanation:
The magnitude of the electrostatic force between two charges is given by Coulomb's law:
where:
is the Coulomb's constant
are the two charges
d is the separation between the two charges
In this problem, let's call F the initial force between the two charges, when they are at a distance of d.
Later, the distance between the two particles is halved, so the new distance is:
This means that the new electrostatic force will be:
Therefore, the force between the two particles will quadruple.
Learn more about electrostatic force:
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Acceleration = (change in speed) / (time for the change)
Acceleration = (220 m/s) / (20 sec)
<em>Acceleration = 11 m/s²</em>